Question

The 7th term from the end of A.P. 3 + 8 + 13 + .... + 63 is ______.

विकल्प

• 23

• 28

• 38

• 33

Answer 1

The 7th term from the end of A.P. 3 + 8 + 13 + .... + 63 is 33.

Explanation:

Last term (l) = 63

d = 8 − 3

= 5

n = 7

a_n = l − (n − 1)d

a₇ = 63 − (7 − 1)5

a₇ = 63 − (6)5

a₇ = 63 − 30

a₇ = 33